Wet Bulb & Safety: HeatCue
Heat index, WBGT & alerts
About
This app provides a clear risk assessment for outdoor activities by calculating the wet-bulb globe temperature (WBGT), which combines heat and humidity. It offers a simple risk band, UV index, and customizable alerts to help users stay safe in various conditions.
What's New in Wet Bulb & Safety
1.2
August 17, 2026
On Apple Watch, My Location complications now follow where you are, show the local place name, and match HeatCue’s app language. Weather updates are more reliable, too.
MoreSubscription plans
Pro Yearly
Alerts, forecast, widgets, and profiles.
In-App Purchases
$99.99
Pro Permanent Unlock
Pay once. Everything in Pro, forever.
Charts
Developer apps
FAQ
What is WBGT and why is it important for HeatCue?
WBGT stands for Wet-Bulb Globe Temperature. It's a measure that combines temperature, humidity, wind speed, and solar radiation to accurately reflect how heat affects the human body. HeatCue uses WBGT to provide a more precise assessment of outdoor heat safety than standard temperature readings alone.
Does HeatCue have ads?
No, HeatCue does not contain advertisements. The app is free to use with optional subscription plans for enhanced features.
What are the subscription options for HeatCue?
HeatCue offers a 'Pro Weekly' subscription for $2.99 per week and a 'Pro Yearly' subscription for $19.99 per year. The yearly plan includes a 7-day free trial.
Can I cancel my HeatCue subscription?
Yes, you can cancel your HeatCue subscription at any time. Subscriptions can typically be managed through your device's app store settings.
What devices does HeatCue support?
HeatCue is available for Apple Watch and iPhone, allowing you to check heat safety conditions on your wrist or phone.
How often is HeatCue updated?
The app was last updated on August 17, 2026, with version 1.2. This indicates a recent update, suggesting ongoing development and support.
What is the age rating for HeatCue?
HeatCue has an age rating of +9. This suggests the content is generally suitable for users aged 9 and older, with no mature themes.
How does HeatCue compare to other weather apps?
Unlike general weather apps, HeatCue specifically focuses on heat safety by calculating WBGT and providing clear risk bands. It also offers persona profiles for different sensitivities and customizable alerts, which are not common features in standard weather applications.